EP 0289382 A1 19881102 - Generator for elastic pulses with a predetermined desired shape, and its use in medical treatment or diagnosis.
Title (en)
Generator for elastic pulses with a predetermined desired shape, and its use in medical treatment or diagnosis.
Title (de)
Generator für elastische Impulse von vorgegebener gewünschter Form und seine Anwendung in medizinischer Behandlung oder Diagnose.
Title (fr)
Générateur d'impulsions élastiques ayant une forme d'onde prédéterminée désirée et son application au traitement ou au diagnostic médical.
Publication
Application
Priority
FR 8705980 A 19870428
Abstract (en)
Generator for elastic pulses comprising a piezoelectric transducer (17) or magnetostriction transducer focusing or associated with focusing means, having a plurality of emitting surface elements (18) generating elastic signals which become superimposed, after propagation over a certain distance, in a focal region, and means (19) for exciting periodically, at a determined rhythm, several groups of surface elements (18) with short and distinct electrical signals respectively, characterised in that the said emitting surfaces (18) belong to transducing elements which are electrically insulated from one another and have different transfer functions, and in that means are provided for phase shifting of the elastic signals emitted by the transducing elements (delay lines 20-21-22). <IMAGE>
IPC 1-7
IPC 8 full level
A61B 8/00 (2006.01); A61B 18/00 (2006.01); B06B 1/02 (2006.01); B06B 1/06 (2006.01); G10K 11/34 (2006.01); H04R 3/00 (2006.01); H04R 15/00 (2006.01); H04R 17/00 (2006.01)
CPC (source: EP US)
A61B 17/225 (2013.01 - EP US); B06B 1/0625 (2013.01 - EP US); A61N 2007/0095 (2013.01 - EP US)
Citation (search report)
- [A] US 4550606 A 19851105 - DROST CORNELIS J [US]
- [A] DE 3119295 A1 19821216 - SIEMENS AG [DE]
- [A] US 3879698 A 19750422 - PEPPER PERRY ARNOLD
- [A] EP 0072498 A1 19830223 - TOKYO SHIBAURA ELECTRIC CO [JP]
- [A] EP 0068961 A2 19830105 - THOMSON CSF [FR]
- [A] US 3924259 A 19751202 - BUTLER JOHN L, et al
- [A] US 3911730 A 19751014 - NIKLAS LUDWIG
- [A] US 2484626 A 19491011 - KELLER ARTHUR C
Designated contracting state (EPC)
AT BE CH DE GB IT LI NL SE
DOCDB simple family (publication)
EP 0289382 A1 19881102; EP 0289382 B1 19921230; AT E84163 T1 19930115; CA 1311293 C 19921208; DE 3877045 D1 19930211; DE 3877045 T2 19930603; ES 2007823 A6 19890701; FR 2614747 A1 19881104; FR 2614747 B1 19890728; JP 2578638 B2 19970205; JP S6485176 A 19890330; US 4991151 A 19910205
DOCDB simple family (application)
EP 88400846 A 19880408; AT 88400846 T 19880408; CA 565153 A 19880426; DE 3877045 T 19880408; ES 8801304 A 19880428; FR 8705980 A 19870428; JP 10742588 A 19880428; US 18717788 A 19880428